CN112366830A - Intelligent high-reliability low-voltage power supply and distribution system based on radial wiring and method thereof - Google Patents

Intelligent high-reliability low-voltage power supply and distribution system based on radial wiring and method thereof Download PDF

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CN112366830A
CN112366830A CN202011412097.9A CN202011412097A CN112366830A CN 112366830 A CN112366830 A CN 112366830A CN 202011412097 A CN202011412097 A CN 202011412097A CN 112366830 A CN112366830 A CN 112366830A
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power supply
regional
switch
main station
load
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CN112366830B (en
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赵玉明
周华群
郭垒
王恒
王婧娟
杨明红
张基伟
孙右好
李志军
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Beijing China Coal Mine Engineering Co ltd
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Beijing China Coal Mine Engineering Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network
    • H02J13/12—Monitoring network conditions, e.g. electrical magnitudes or operational status
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network
    • H02J13/10—Circuit arrangements for providing remote monitoring or remote control of equipment in a power distribution network characterised by displaying of information or by user interaction, e.g. supervisory control and data acquisition [SCADA] systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/007—Arrangements for selectively connecting one or more loads to one or more power sources or power lines
    • H02J3/0073—Arrangements for selectively connecting one or more loads to one or more power sources or power lines by providing alternative feeding paths when the main path fails
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/01—Arrangements for reducing harmonics or ripples
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/12—Arrangements for adjusting voltage in AC networks by changing a characteristic of the network load
    • H02J3/16—Arrangements for adjusting voltage in AC networks by changing a characteristic of the network load by adjustment of reactive power
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for AC mains or AC distribution networks
    • H02J3/38—Arrangements for feeding a single network from two or more generators or sources in parallel; Arrangements for feeding already energised networks from additional generators or sources in parallel
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2103/00—Details of circuit arrangements for mains or AC distribution networks
    • H02J2103/30—Simulating, planning, modelling, reliability check or computer assisted design [CAD] of electric power networks
    • H02J2103/35—Grid-level management of power transmission or distribution systems, e.g. load flow analysis or active network management
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30—Reactive power compensation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/40—Arrangements for reducing harmonics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/248—UPS systems or standby or emergency generators

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

本发明公开一种基于放射式接线的智能化高可靠性低压供配电系统及其方法，包括在供电母线与负荷母线之间的主站设备，以及在负荷母线与负荷之间的N个区域站设备。本发明放射式接线的低压供配电系统可靠性高、智能化高，主站多功能电源采取主电源模式，将系统内部的供电无缝切换到主站柴油发电机上，不存在断电死区时间；主站多功能电源对负荷接入点进行谐波和无功动态跟踪补偿功能，不会将系统内部产生的谐波通过供电母线接入点进入到电网，造成污染。系统内部任何负荷分支发生故障时，不需要整个系统断电，故障区域控制器与区域多功能电源相互配合实现试起动，尝试区域内的故障自愈，显示在主站人机界面上，简化排除过程，减少排除故障的工作量。

Figure 202011412097

The invention discloses an intelligent high-reliability low-voltage power supply and distribution system based on radial wiring and a method thereof, including a main station equipment between the power supply bus and the load bus, and N areas between the load bus and the load station equipment. The low-voltage power supply and distribution system with radial wiring of the present invention has high reliability and high intelligence. The multi-function power supply of the main station adopts the main power supply mode, and the power supply inside the system is seamlessly switched to the diesel generator of the main station, and there is no power failure dead zone. Time; the main station multi-function power supply performs harmonic and reactive power dynamic tracking compensation function on the load access point, and will not enter the harmonics generated inside the system into the power grid through the power supply bus access point, causing pollution. When any load branch in the system fails, the entire system does not need to be powered off. The fault zone controller and the zone multi-function power supply cooperate with each other to realize trial start, try the self-healing of faults in the zone, and display it on the main station man-machine interface to simplify troubleshooting process, reducing the workload of troubleshooting.

Figure 202011412097

Description

Intelligent high-reliability low-voltage power supply and distribution system based on radial wiring and method thereof
Technical Field
The invention relates to the technical field of power supply and distribution, in particular to an application of the power supply and distribution system which is applicable to dispersed load areas of industrial construction sites, auxiliary equipment of power plants, coal mines, steel, petrochemical industry, chemical fibers, chip manufacturing and the like and has high requirements of field equipment and instruments on power supply and distribution quality. In particular to an intelligent high-reliability low-voltage power supply and distribution system based on radial wiring and a method thereof.
Background
At present, low-voltage power supply and distribution lines have basic wiring modes such as a radial type, a branch type, a ring type and the like. The radial wiring is based on independent load or concentrated load and is supplied by independent distribution lines, is characterized in that outgoing lines are not affected when in fault, and is generally used in places with large capacity, concentrated capacity or high power supply reliability of single equipment. Compared with other wiring forms, radial wiring is already higher than other wiring forms. However, for many application scenarios, the conventional low-voltage power supply and distribution system only adopting radial wiring still cannot meet the requirement of load on high-reliability power supply, and the conventional low-voltage power supply and distribution system generally has the problem of low intelligence.
For the monitoring and protecting equipment of the conventional power supply and distribution system, except for the power line, a special communication line needs to be laid between each station and the load, the cost and the engineering complexity are very high, and the expansion and transformation flexibility of the subsequent engineering is limited.
The power supply of the power grid has the conditions of voltage sag and short-time interruption, and the load in the power distribution system is seriously influenced. The voltage sag and the short-term interruption have been well-defined in the national standard "power quality voltage sag and short-term interruption" (GB/T30317). Because the voltage sag and the short-time interruption occur and the recovery speed is very fast, the conventional power supply and distribution system can only be forced to power off, and even if the system is provided with a standby diesel generator, the power-off dead time exists between the power failure of a power supply bus and the completion of the starting of the diesel generator.
Because nonlinear loads and power electronic equipment exist in the power supply and distribution system, harmonic current with the amplitude and frequency changing constantly can be generated, harmonic waves enter a power grid through a power supply bus access point, pollution is caused, and the power grid company fines when the harmonic waves exceed a limit value. The national standard of harmonic wave of electric energy quality public power grid (GB/T14549) clearly defines the harmonic wave and gives the limit value of the harmonic wave injected into the access point of the power grid.
The intelligent microcomputer relay protection device is widely applied to power generation, power transmission and power transformation links of electric power, but is rarely used in power supply and distribution links, so that a low-voltage power supply and distribution system is originally lagged behind. The thermomagnetic tripping circuit breaker fuse is generally used in the conventional power supply and distribution system, particularly in a low-voltage power distribution link, when any load branch breaks down, the whole system is required to be powered off, the removing process is complex, and the workload is large.
Because reactive loss caused by a power line and a load causes too low voltage on a load side, the optimal solution is usually in-situ compensation, and the conventional in-situ compensation adopts large-size capacitance compensation, can only carry out constant value compensation, lacks flexibility and has short operation and maintenance period. When a high-power motor is started under load, reactive loss sudden change can be caused, and the system voltage is greatly reduced. If corresponding measures are not taken during normal operation or when the alternating current motor is directly started, equipment consumes reactive power, and the voltage of a power distribution bus connected with the motor generates large voltage deviation, so that the normal operation of other electric equipment connected to the power distribution bus is directly influenced, and over-voltage and under-voltage protection actions can be triggered to cause harmful tripping of the equipment; meanwhile, the motor winding is heated by overlarge starting impact current, so that the insulation aging is accelerated, and the service life of the motor is influenced. In order to deal with the voltage deviation problem of the distribution bus, the voltage deviation level of the distribution bus caused in the normal operation and the motor starting process is limited on the one hand; on the other hand, improvement measures are taken to reduce the impact caused by the starting of the motor so as to meet the limitation requirement of the bus voltage deviation level. The current relevant specification standards impose a clear limit on the level of deviation of the bus voltage at the start of the ac motor: the bus is connected with lighting or other loads sensitive to voltage fluctuation, and the voltage of the motor is not lower than 90% of the rated voltage when the motor is frequently started; when the motor is started infrequently, the voltage is not lower than 85% of the rated voltage. The voltage fluctuation of the load which is not illuminated or sensitive to other voltage fluctuation on the bus is not lower than 80 percent of the rated voltage. When other electric equipment is not connected to the bus voltage, the starting torque of the motor can be determined according to the condition of ensuring the starting torque of the motor; for low voltage motors, it is also ensured that the voltage of the contactor coil is not lower than the release voltage.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is as follows:
the low-voltage power supply and distribution system with conventional radial wiring has poor reliability and low intellectualization; besides the power line, a dedicated communication line needs to be laid between each station and the load, so that the cost and the engineering complexity are high; when the power supply bus is abnormal, the whole system is powered off, and even if the standby diesel generator is started, a power-off dead time exists between the power failure of the power supply bus and the starting of diesel; harmonic waves generated in the system enter a power grid through a power supply bus access point, so that pollution is caused, and fine money is paid by a power grid company when the harmonic waves exceed a limit value; when any load branch in the system breaks down, the whole system needs to be powered off, the removal process is complex, and the workload is large; due to reactive loss caused by a power line and a load, the voltage at the load side is too low, and the conventional capacitance compensation has large volume and can only carry out fixed value compensation; when a high-power motor is started under load, reactive loss sudden change can be caused, and the system voltage is greatly reduced.
In order to overcome the defects, the invention discloses an intelligent high-reliability low-voltage power supply and distribution system based on radial wiring and a method thereof by intensively researching and designing and comprehensively engaging in relevant experiences and research achievements for many years.
In order to solve the technical problems, the invention provides the following technical scheme:
an intelligent high-reliability low-voltage power supply and distribution system based on radial wiring comprises main station equipment between a power supply bus and a load bus, and N regional station equipment between the load bus and a load, wherein N is a natural number greater than or equal to 1;
the master station equipment comprises a master station controller, a master station communication coupler, a master station diesel generator, a master station multifunctional power supply, a communication wave trap, a master station power supply bus voltage and current detection module, a grid-connected switch and a human-computer interaction interface; the current output end of the power supply bus is electrically connected with the communication wave trap, the voltage and current detection module of the main station power supply bus, the grid-connected switch and the current input end of the load bus in sequence; the master station communication coupler, the master station diesel generator and the master station multifunctional power supply are respectively and electrically connected with the load bus; the master station controller is respectively in communication connection with the master station communication coupler, the master station diesel generator, the master station multifunctional power supply, the communication wave trap, the master station power supply bus voltage and current detection module, the grid-connected switch and the human-computer interaction interface; the master station multifunctional power supply is also in communication connection with the master station power supply bus voltage and current detection module, the grid-connected switch and the master station diesel generator respectively;
each regional station device comprises a regional voltage and current detector, a regional switch, a regional communication coupler, a regional multifunctional power supply and a regional controller which are arranged between a load bus and a regional load sub-bus, and n branch switches arranged between the regional load sub-bus and a branch load, wherein n is a natural number which is more than or equal to 1; the current output end of the load bus is electrically connected with the current input end of the regional load son-mother line sequentially through the regional voltage and current detector and the regional switch, and the regional multifunctional power supply is electrically connected with the regional load son-mother line; the zone communication coupler is located between the load bus and the zone voltage current detector; the regional load sub-bus is electrically connected with the n branch switches; the zone controller is in electrical communication with the zone voltage current detector, the zone switch, the zone communication coupler, the zone multifunction power supply, and the n branch switches; the regional multifunctional power supply is in communication connection with the regional switch.
In the intelligent high-reliability low-voltage power supply and distribution system based on the radial wiring, the main station controller comprises a coordination control unit layer and a function control unit layer; the coordination control unit layer comprises a master station communication control unit and a master station function coordination control unit; the function control unit layer comprises a power supply bus detection unit, a grid-connected switch control unit, a multifunctional power supply control unit, a diesel generator control unit, a communication wave trap monitoring unit and a communication transceiving control unit; the human-computer interaction interface is in communication connection with the master station communication control unit, and the master station communication control unit is in communication connection with the master station function coordination control unit; the master station function coordination control unit is respectively connected with the diesel generator through the power supply bus detection unit, the grid-connected switch control unit, the multifunctional power supply control unit, the diesel generator control unit, the master station power supply bus voltage and current detection module, the grid-connected switch, the master station multifunctional power supply and the master station diesel generator in a communication mode, and the master station communication control unit is respectively connected with the communication wave trap monitoring unit and the communication transceiving control unit in a communication mode through the communication wave trap and the master station communication coupler.
The intelligent high-reliability low-voltage power supply and distribution system based on radial wiring comprises a main station multifunctional power supply main control unit layer, a main station basic control unit layer and a main station main circuit, wherein the main station basic control unit layer comprises a main station power supply function realization basic control unit and a main station energy storage element management unit, the main circuit comprises a main station soft start switch group K11, a main station converter circuit unit IGBT11 and a main station energy storage element unit BMS11, the main station power supply bus voltage and current detection module, the grid-connected switch, the main station diesel generator and the main station controller are in communication connection with the main station multifunctional power supply main control unit layer, and the main station multifunctional power supply main control unit layer is in communication connection with the main station power supply function realization basic control unit and the main station energy storage element management unit; the master station energy storage element BMS11 is in communication connection with the master station energy storage element management unit; the master station soft start switch group K11 and the master station current transformation circuit unit IGBT11 are in communication connection with the master station power supply function realization basic control unit; the main station energy storage element unit BMS11 is electrically connected with the main station current transformation circuit unit IGBT11, the main station current transformation circuit unit IGBT11 is electrically connected with one end of the main station soft start switch group K11, and the other end of the main station soft start switch group K11 is electrically connected with the load bus; a sampling device CPT11 is arranged between the master station soft start switch group K11 and the master station current transformation circuit unit IGBT11, and a signal output end of the sampling device CPT11 is in communication connection with the basic control unit in the master station power supply function; a sampling device CPT12 is arranged between the main station current transformation circuit unit IGBT11 and the main station energy storage element unit BMS11, and the sampling device CPT12 is respectively in communication connection with the main station power supply function realization basic control unit and the main station energy storage element management unit;
the main station multifunctional power supply is provided with a main power supply mode and an auxiliary power supply mode, and is realized by the cooperation of a main station power supply function realization basic control unit and a main station energy storage element management unit; when the basic control unit is realized by only starting the power supply function of the main station, the mode is an auxiliary power supply mode; the master station controller enables the master station multifunctional power supply to realize automatic mode switching, and the master station multifunctional power supply realizes seamless switching between the power supply bus and the master station diesel generator.
The intelligent high-reliability low-voltage power supply and distribution system based on the radial wiring comprises a grid-connected switch controller and a grid-connected switch circuit, wherein the main station controller and the main station multifunctional power supply are in communication connection with the grid-connected switch controller, and the grid-connected switch circuit is a grid-connected switch K601; one end of the grid-connected switch K601 is electrically connected with the power supply bus, and the other end of the grid-connected switch K601 is electrically connected with the load bus; a sampling device CTP601 is arranged between the grid-connected switch K601 and the power supply bus, a sampling device CPT602 is arranged between the grid-connected switch K601 and the load bus, and the signal output ends of the sampling device CTP601 and the sampling device CPT602 are in communication connection with the input end of the grid-connected switch controller; the grid-connected switch K601 is in communication connection with the grid-connected switch controller;
the master station diesel generator comprises a master station diesel generator controller and a diesel generator control circuit, and the master station controller and the master station multifunctional power supply are in communication connection with the master station diesel generator controller; the diesel generator control circuit comprises a diesel generator and a diesel generator switch K701, the diesel generator is electrically connected with the load bus through the diesel generator switch K701, a sampling device CPT702 is arranged between the diesel generator and the diesel generator switch K701, and the sampling device CPT701 is arranged between the diesel generator switch K701 and the load bus; the diesel generator, the sampling device CPT702, the sampling device CPT701 and the generator switch K701 are respectively in communication connection with the master station diesel generator controller.
The intelligent high-reliability low-voltage power supply and distribution system based on the radial wiring comprises a regional controller, a regional coordination control unit layer and a regional function control unit layer, wherein the regional controller comprises a power supply unit layer, a power supply unit layer and a power distribution unit layer; the regional coordination control unit layer comprises a regional communication control unit and a regional function coordination control unit; the regional function control unit layer comprises a regional detection unit, a regional switch control unit, a regional multifunctional power supply control unit, a branch switch state collection control unit and a communication transceiving control unit; the area communication control unit is in communication connection with the area function coordination control unit; the regional function coordination control unit is in communication connection with the regional voltage and current detector, the regional switch, the regional multifunctional power supply and the n branch switches through the regional detection unit, the regional switch control unit, the regional multifunctional power supply control unit and the branch switch state collection control unit respectively, and the regional communication control unit is in communication connection with the regional communication coupler through the regional communication transceiving control unit.
The regional multifunctional power supply comprises a regional main control unit layer, a regional basic control unit layer and a regional main circuit, wherein the regional basic control unit layer comprises a regional power supply function realization basic control unit and a regional energy storage element management unit, the regional main circuit comprises a regional soft start switch group K21, a regional converter circuit unit IGBT21 and a regional energy storage element unit BMS21, the regional controller is in communication connection with the regional multifunctional power supply main control unit of the regional main control unit layer, and the regional multifunctional power supply main control unit is in communication connection with the regional power supply function realization basic control unit and the regional energy storage element management unit; the regional energy storage element unit BMS21 is in communication connection with the regional energy storage element management unit; the region soft start switch group K21 and the region current transformation circuit unit IGBT21 are in communication connection with the region power supply function realization basic control unit; the regional energy storage element unit BMS21 is electrically connected with the regional converter circuit unit IGBT21, the regional converter circuit unit IGBT21 is electrically connected with one end of the regional soft start switch group K21, and the other end of the regional soft start switch group K21 is electrically connected with the regional load son-son wire; a sampling device CPT21 is arranged between the region soft start switch group K21 and the region current transformation circuit unit IGBT21, and the signal output end of the sampling device CPT21 is in communication connection with the region power supply function realization basic control unit; a sampling device CPT22 is arranged between the area current transformation circuit unit IGBT21 and the area energy storage element unit BMS21, and the sampling device CPT22 is respectively in communication connection with the area power supply function realization basic control unit and the area energy storage element management unit;
the regional multifunctional power supply is provided with a standby power mode and a reactive compensation mode, and is realized by matching a regional power supply function realization basic control unit with a regional energy storage element management unit;
the area switch comprises an area switch controller and an area switch circuit, the area controller and the area multifunctional power supply are in communication connection with the area switch controller, and the area switch circuit is an area switch K501; one end of the area switch K501 is electrically connected with the load bus, and the other end of the area switch K501 is electrically connected with the area load primary-secondary wire; a sampling device CTP501 is arranged between the area switch K501 and the load bus bar, a sampling device CPT502 is arranged between the area switch K501 and the area load sub bus bar, and the signal output ends of the sampling device CTP501 and the sampling device CPT502 are in communication connection with the area switch controller; the area switch K501 is in communication connection with the area switch controller;
the branch switch comprises a branch switch controller and a branch switch circuit, the area controller is in communication connection with the branch switch controller, the branch switch circuit is a branch switch K401, one end of the branch switch K401 is electrically connected with an area load primary and secondary wire, the other end of the branch switch K401 is electrically connected with a branch load, and the branch switch K401 is in communication connection with the branch switch controller.
The intelligent high-reliability low-voltage power supply and distribution method based on the radial wiring comprises the following steps:
(1) installing any one of the intelligent high-reliability low-voltage supply and distribution systems based on the radial wiring to build main station equipment and regional station equipment, and connecting circuit lines and communication lines of the main station equipment and the regional station equipment;
(2) the method comprises the steps that the types, characteristics and parameters of equipment in main station equipment and regional station equipment are recorded in a main station human-computer interface, and the load grade and power supply requirement of each load region are set;
(3) inputting a corresponding control strategy on a human-computer interface, controlling the functions of master station equipment and controlling the functions of each regional station equipment;
(4) and starting operation, and then realizing a self-checking state, a static operation state, a dynamic coordination state, a master station equipment fault state and a system shutdown state according to the regional load.
The intelligent high-reliability low-voltage power supply and distribution method based on the radial wiring comprises the following steps in step (1):
(1-1) selecting a grid-connected switch, a main station diesel generator and a main station multifunctional power supply according to the actual power supply and distribution capacity and voltage grade requirements;
(1-2) selecting a regional switch and a regional multifunctional power supply according to the power consumption capacity and voltage of each load region;
(1-3) selecting a branch switch of a specific load branch according to the specific load size and voltage of a load area;
(1-4) the system sets a master station device: sequentially accessing a communication wave trap, a master station power supply bus voltage and current detection module and a grid-connected switch after a power supply bus access point to reach a load bus; the load bus is electrically connected with the master station communication coupler, the master station diesel generator and the master station multifunctional power supply; setting a main station controller and a human-computer interaction interface; the master station controller is respectively in communication connection with the master station communication coupler, the master station diesel generator, the master station multifunctional power supply, the communication wave trap, the master station power supply bus voltage and current detection module, the grid-connected switch and the human-computer interaction interface; the master station multifunctional power supply is also in communication connection with the master station power supply bus voltage and current detection module, the grid-connected switch and the master station diesel generator respectively;
the system sets regional station equipment of the load region according to the distribution situation of the load region: connecting a power supply line to the load busbar, and connecting a regional voltage and current detection module and a regional switch in sequence after the other end of the line reaches a load region to reach a regional load sub-busbar; the regional load main and auxiliary lines are connected with a regional multifunctional power supply; the regional communication coupler is positioned between a power supply line connected to the load bus and the regional voltage and current detection module; n branch switches between the regional load sub-bus and the branch loads; setting a region controller; the zone controller is in electrical communication with the zone voltage current detector, the zone switch, the zone communication coupler, the zone multifunction power supply, and the n branch switches; the regional multifunctional power supply is in communication connection with the regional switch.
The intelligent high-reliability low-voltage power supply and distribution method based on the radial wiring comprises the following steps of (4): the self-checking state is as follows: the method comprises the following steps of completing system construction, completing strategy presetting of a master station controller and a zone controller, and starting the system, wherein the master station controller carries out self-checking on master station equipment and zone controller equipment to which the zone controller belongs; if the system state is normal, displaying whether to start on a human-computer interaction interface, and waiting for the next operation; if the system has a fault, displaying fault information on a human-computer interaction interface, forbidding starting, and waiting for manual fault removal; if a specific equipment fault is found, shielding the fault equipment on a human-computer interaction interface, or starting self-checking again after manually removing the equipment fault;
the static operating state is as follows: the master station equipment normally runs, and the load in the area is directly started without a high-power motor; the master station diesel generator is in a cold backup non-starting state, and the master station multifunctional power supply is in an auxiliary power supply state; the N regional multifunctional power supplies are in a reactive compensation mode, and only stable conventional reactive compensation is carried out on the regions where the multifunctional power supplies are located.
The intelligent high-reliability low-voltage power supply and distribution method based on the radial wiring comprises the following steps of (4): the dynamic coordination states include 7 dynamic coordination states, which are specifically as follows:
dynamic coordination state 1: the main station equipment normally runs, when a high-power motor is loaded in an area and is directly started, the diesel generator of the main station is in a cold backup non-starting state, and the multifunctional power supply of the main station is in an auxiliary power supply state; the N regional multifunctional power supplies are in a reactive compensation mode, the regional multifunctional power supplies in the regions where the high-power motors are located in the starting process have the function of high-power load auxiliary starting compensation, reactive loss with large mutation is compensated, and voltage fluctuation of regional load sub-buses and load buses is restrained;
dynamic coordination state 2: the main station equipment normally operates, when faults occur in one or more load areas, the branch switch of the branch where the faults are located is tripped, the faults are successfully cut off, the area switch where the faults are located keeps a closed state, and after receiving a branch switch feedback signal, the area controller of the area where the faults are located uploads the branch switch feedback signal to the main station controller, displays the branch switch feedback signal on a human-computer interface and notifies a human to maintain the fault branch;
in the dynamic coordination state 3, the master station equipment normally operates, and after a fault occurs in one or more load areas, the branch switch of the branch where the fault exists refuses to operate, or when the fault point is located on the load master-slave line of the area, the area switch where the fault exists is disconnected; the method comprises the following steps that a region controller where a fault is located and a region multifunctional power supply where the fault is located are matched with each other to achieve the purpose of trying to start, sending a message for applying for re-grid connection to a main station controller, and trying to self-heal the fault in the region in the circulating process of automatically recovering the grid connection function; if the fault self-healing can not be realized, uploading the fault self-healing to a main station controller, displaying the fault self-healing to a human-computer interface, and informing a worker to maintain the fault branch circuit;
state coordination state 4: the main station equipment normally operates, and after a fault occurs in one or more load areas, the branch switch of the branch where the fault exists refuses to operate, or when the fault point is positioned on the load master-slave line of the area, the area switch where the fault exists is disconnected; the fault self-healing in the area dominated by the fault area controller fails, the area switch keeps a disconnected state, and the area controller submits a message to the master station controller and displays the message on a master station human-computer interface to require manual fault removal;
dynamic coordination state 5: the master station equipment normally operates, the voltage of a load bus is low due to low voltage of the power supply bus or overlarge total load of N areas, and the master station controller sends area load cutting instructions to each area controller step by step according to preset power supply priority until the voltage of the load bus returns to a normal value, so that power supply of the load area with high priority is ensured;
dynamic coordination state 6: when the power supply bus is abnormal, the multifunctional power supply of the master station adopts a main power supply mode to seamlessly switch the power supply in the system to the diesel generator of the master station; when the power supply bus is detected to be recovered to normal, the diesel generator is turned off, the main station multifunctional power supply adopts a main power supply mode, and power supply in the system is seamlessly switched back to the power supply bus; the load of each area is in a normal working state;
dynamic coordination state 7: when the power supply bus is abnormal, the main power mode of the main station multifunctional power supply is not enabled, the regional multifunctional power supply is enabled in the standby power mode, each regional controller disconnects the regional switch, and the regional multifunctional power supply enters the standby power mode to supply power to the load in the region; when the condition that the power supply bus is recovered to be normal is detected, the regional multifunctional power supply seamlessly switches the power supply inside the region back to the power supply line bus; the standby power mode of the regional multifunctional power supply is not enabled, and the regional multifunctional power supply interrupts the power supply of the load in the region.
The intelligent high-reliability low-voltage power supply and distribution method based on the radial wiring comprises the following steps of (4):
master station device fault status: the master station equipment breaks down, the standby power mode of the regional multifunctional power supply is enabled, each regional controller disconnects a regional switch, and the regional multifunctional power supply enters the standby power mode to supply power to loads in the region until the energy stored by the regional multifunctional power supply is exhausted; the standby power mode of the regional multifunctional power supply is not enabled, and the load power supply in the region is interrupted;
a system shutdown state: the main station controller is manually shut down on a man-machine interface, the main station controller sends a shut-down instruction to each zone controller, and the system enters a shut-down state.
The technical scheme of the invention achieves the following beneficial technical effects:
the low-voltage power supply and distribution system with the radial wiring is high in reliability and high in intelligence.
(1) Besides power lines, special communication lines do not need to be laid independently between each station and the load, and the cost and the engineering complexity are greatly reduced by adopting the existing communication lines;
(2) when the power supply bus is abnormal, the whole system does not need to be powered off, the main station multifunctional power supply adopts a main power supply mode, and power supply in the system is seamlessly switched to the main station diesel generator, so that no power-off dead time exists between power failure of the power supply bus and starting of the diesel generator;
(3) the main station and each load area are connected with a communication wave trap, and meanwhile, the multifunctional power supply of the main station can perform a harmonic and reactive dynamic tracking compensation function on the load access points, so that the harmonic generated in the system can not enter a power grid through a power supply bus access point to cause pollution;
(4) when any load branch in the system fails, the whole system is not required to be powered off, the fault area controller and the area multifunctional power supply are matched with each other to realize trial start, the fault self-healing in the area is tried, if the self-healing fails, the area controller submits a message to the main station controller and displays the message on the man-machine interface of the main station, the manual fault removal is required, the fault removal process is greatly simplified, and the workload of fault removal is reduced;
(5) the multifunctional power supply of the main station is provided with a reactive dynamic tracking compensation function, and the multifunctional power supply of the area is provided with a reactive compensation mode, so that the tracking compensation can be carried out on reactive loss caused by a power line and a load;
(6) when a high-power motor load starts, the multifunctional power supply in each area is in a reactive compensation mode, the multifunctional power supply in the area where the high-power motor is located in the starting process plays a function of high-power load auxiliary starting compensation, reactive loss with large mutation is compensated, and voltage fluctuation of a sub-bus and a load bus of the area load is restrained.
Drawings
FIG. 1 is a schematic diagram of a system structure of an intelligent high-reliability low-voltage power supply and distribution system based on radial wiring according to the present invention;
FIG. 2 is a schematic block diagram of a master station monitor of the intelligent high-reliability low-voltage power supply and distribution system based on radial wiring according to the present invention;
FIG. 3 is a block diagram of the coordination control unit in the main station monitor of the intelligent high-reliability low-voltage power supply and distribution system based on radial wiring according to the present invention;
FIG. 4 is a functional block diagram of a main station power supply of the intelligent high-reliability low-voltage power supply and distribution system based on radial wiring according to the present invention;
FIG. 5 is a schematic block diagram of a master station diesel generator of the intelligent high-reliability low-voltage power supply and distribution system based on radial wiring according to the present invention;
FIG. 6 is a schematic block diagram of a master station grid-connected switch of the intelligent high-reliability low-voltage power supply and distribution system based on radial wiring according to the present invention;
FIG. 7 is a schematic block diagram of a local monitor of the intelligent high-reliability low-voltage power supply and distribution system based on radial wiring according to the present invention;
FIG. 8 is a block diagram of the coordination control unit in the area monitor of the intelligent high-reliability low-voltage power supply and distribution system based on radial wiring according to the present invention;
FIG. 9 is a schematic block diagram of a regional multifunctional power supply of the intelligent high-reliability low-voltage power supply and distribution system based on radial wiring according to the present invention;
FIG. 10 is a schematic block diagram of the area switch of the intelligent high-reliability low-voltage power supply and distribution system based on radial wiring according to the present invention;
FIG. 11 is a block diagram of the in-zone branch switch of the intelligent high-reliability low-voltage power supply and distribution system based on radial wiring according to the present invention; .
Detailed Description
As shown in fig. 1, the intelligent high-reliability low-voltage power supply and distribution system based on radial wiring comprises a main station device between a power supply bus and a load bus, and N regional station devices between the load bus and a load, wherein N is a natural number greater than or equal to 1;
the master station equipment comprises a master station controller, a master station communication coupler, a master station diesel generator, a master station multifunctional power supply, a communication wave trap, a master station power supply bus voltage and current detection module, a grid-connected switch and a human-computer interaction interface; the current output end of the power supply bus is electrically connected with the communication wave trap, the voltage and current detection module of the main station power supply bus, the grid-connected switch and the current input end of the load bus in sequence; the master station communication coupler, the master station diesel generator and the master station multifunctional power supply are respectively and electrically connected with the load bus; the master station controller is respectively in communication connection with the master station communication coupler, the master station diesel generator, the master station multifunctional power supply, the communication wave trap, the master station power supply bus voltage and current detection module, the grid-connected switch and the human-computer interaction interface; the master station multifunctional power supply is also in communication connection with the master station power supply bus voltage and current detection module, the grid-connected switch and the master station diesel generator respectively;
each regional station device comprises a regional voltage and current detector, a regional switch, a regional communication coupler, a regional multifunctional power supply and a regional controller which are arranged between a load bus and a regional load sub-bus, and n branch switches arranged between the regional load sub-bus and a branch load, wherein n is a natural number which is more than or equal to 1; the current output end of the load bus is electrically connected with the current input end of the regional load son-mother line sequentially through the regional voltage and current detector and the regional switch, and the regional multifunctional power supply is electrically connected with the regional load son-mother line; the zone communication coupler is located between the load bus and the zone voltage current detector; the area coupler needs to be installed on the left side of the area switch, otherwise the area cannot communicate with the outside after the area switch is tripped. The area coupler belongs to area station equipment and is arranged at the tail ends of a line 1 and a line 2 … …, namely a line N; the regional load sub-bus is electrically connected with the n branch switches; the zone controller is in electrical communication with the zone voltage current detector, the zone switch, the zone communication coupler, the zone multifunction power supply, and the n branch switches; the regional multifunctional power supply is in communication connection with the regional switch.
The system is provided with a master station and a plurality of load areas, wherein the master station and each load area are respectively provided with a monitor and a multifunctional power supply; the main station monitor is provided with the highest priority and can enable or close the specific functions of the monitors in each area; the master station multifunctional power supply realizes seamless switching between a power supply bus and a diesel generator by switching between a main power supply mode and an auxiliary power supply mode, and is provided with a function of realizing harmonic wave and reactive dynamic tracking compensation on a system access point; the regional controller is provided with functions of removing faults in the region, trial starting after fault removal and automatic recovery of grid connection, so that self-healing of the faults in the region is realized; the regional multifunctional power supply is provided with a regional trial start function, has a standby power mode and a reactive compensation mode, and realizes a conventional line reactive compensation function and a high-power load auxiliary start compensation function in the reactive compensation mode.
As shown in fig. 2 and 3, the master station controller includes a coordination control unit layer and a functional control unit layer; the coordination control unit layer comprises a master station communication control unit and a master station function coordination control unit; the function control unit layer comprises a power supply bus detection unit, a grid-connected switch control unit, a multifunctional power supply control unit, a diesel generator control unit, a communication wave trap monitoring unit and a communication transceiving control unit; the human-computer interaction interface is in communication connection with the master station communication control unit, and the master station communication control unit is in communication connection with the master station function coordination control unit; the master station function coordination control unit is respectively connected with the diesel generator through the power supply bus detection unit, the grid-connected switch control unit, the multifunctional power supply control unit, the diesel generator control unit, the master station power supply bus voltage and current detection module, the grid-connected switch, the master station multifunctional power supply and the master station diesel generator in a communication mode, and the master station communication control unit is respectively connected with the communication wave trap monitoring unit and the communication transceiving control unit in a communication mode through the communication wave trap and the master station communication coupler.
The main station controller and each zone controller realize the receiving or sending of communication signals inside the system by using the existing power line through the respective main station communication coupler and the zone communication coupler. The master station controller sets the highest priority and may enable or disable the respective zone supervisor functions.
The main station controller sets the power supply priority of each load area and has the function of load shedding and important load protection power supply. When the load bus voltage is detected to be too low, the main station controller sends load cutting instructions to each zone controller step by step according to the preset power supply priority until the load bus voltage recovers to a normal value, and the power supply of the load zone with high priority is ensured.
As shown in fig. 4, the master station multifunctional power supply comprises a master station main control unit, a master station basic control unit and a master station main circuit, wherein the master station basic control unit comprises a master station power supply function realization basic control unit and a master station energy storage element management unit, the main circuit comprises a master station soft start switch group K11, a master station converter circuit unit IGBT11 and a master station energy storage element unit BMS11, the master station power supply bus voltage and current detection module, the grid-connected switch, the master station diesel generator and the master station controller are in communication connection with the master station main control unit, and the master station main control unit is in communication connection with the master station power supply function realization basic control unit and the master station energy storage element management unit; the master station energy storage element BMS11 is in communication connection with the master station energy storage element management unit; the master station soft start switch group K11 and the master station current transformation circuit unit IGBT11 are in communication connection with the master station power supply function realization basic control unit; the main station energy storage element unit BMS11 is electrically connected with the main station current transformation circuit unit IGBT11, the main station current transformation circuit unit IGBT11 is electrically connected with one end of the main station soft start switch group K11, and the other end of the main station soft start switch group K11 is electrically connected with the load bus; a sampling device CPT11 is arranged between the master station soft start switch group K11 and the master station current transformation circuit unit IGBT11, and a signal output end of the sampling device CPT11 is in communication connection with the basic control unit in the master station power supply function; a sampling device CPT12 is arranged between the main station current transformation circuit unit IGBT11 and the main station energy storage element unit BMS11, and the sampling device CPT12 is respectively in communication connection with the main station power supply function realization basic control unit and the main station energy storage element management unit;
the main station multifunctional power supply is provided with a main power supply mode and an auxiliary power supply mode, and is realized by the cooperation of a main station power supply function realization basic control unit and a main station energy storage element management unit; in the main power supply mode, the basic control unit layer controls the main loop, and the energy storage element unit discharges to provide all energy required by the power distribution network. In the auxiliary power supply mode, the energy storage element unit only provides part of energy for compensation or charging required by functions, and main energy required by the power distribution network comes from a power supply bus access point. Different modes and functions are different. The master station controller enables automatic mode switching of the master station multifunctional power supply, and the master station multifunctional power supply realizes seamless switching between the power supply bus and the master station diesel generator. The main power supply mode and the auxiliary power supply mode adopt a set of hardware circuits, and only software control algorithms are different. The software control algorithm relates to four conditions, namely a main power supply control mode and an auxiliary power supply control mode, wherein the main power supply mode is switched to the auxiliary power supply mode, and the auxiliary power supply mode is switched to the main power supply mode, which are all realized by the software control algorithm in a basic control unit layer. Under all working conditions, the energy storage element unit is in a working state. For example, during a main power mode or mode switch, the energy storage element is largely discharged. In the auxiliary mode, the energy storage element is charged or discharged to compensate the energy, or is in a floating state or a trickle-standby state.
Under the condition that the power supply bus normally supplies power, the main station multifunctional power supply is in an auxiliary power supply mode, and dynamic tracking compensation is realized on harmonic waves with variable sizes and frequencies and reactive dynamic loss with variable values.
When the power supply bus normally supplies power and is abnormal, the system trips to a grid-connected switch, and meanwhile, the main station multifunctional power supply is switched from an auxiliary power supply mode to a main power supply mode; the main station multifunctional power supply is used as a main power supply of the system to maintain the voltage and the frequency in the system; and simultaneously starting the diesel generator of the main station, when the diesel generator of the main station is started and enters a normal working state, the multifunctional power supply of the main station is switched from a main power supply mode to an auxiliary power supply mode, and the diesel generator is used as a main power supply of a system to maintain the voltage and the frequency in the system.
When the system detects that the power supply bus is recovered to be normal, the main station multifunctional power supply is switched to a main power supply mode to replace a main station diesel generator to serve as a main power supply of the system, the voltage, the frequency and the phase of the system are adjusted by taking the detected power supply bus as a reference, a grid-connected switch is combined after adjustment is completed, the main station multifunctional power supply is switched to an auxiliary power supply mode from the main power supply mode, and the power supply bus is recovered to supply power to the system.
As shown in fig. 6, the grid-connected switch includes a grid-connected switch controller and a grid-connected switch circuit, the master station controller and the master station multifunctional power supply are in communication connection with the grid-connected switch controller, and the grid-connected switch circuit is a grid-connected switch K601; one end of the grid-connected switch K601 is electrically connected with the power supply bus, and the other end of the grid-connected switch K601 is electrically connected with the load bus; a sampling device CTP601 is arranged between the grid-connected switch K601 and the power supply bus, a sampling device CPT602 is arranged between the grid-connected switch K601 and the load bus, and the signal output ends of the sampling device CTP601 and the sampling device CPT602 are in communication connection with the grid-connected switch controller; the grid-connected switch K601 is in communication connection with the grid-connected switch controller;
as shown in fig. 5, the master station diesel generator includes a master station diesel generator controller and a diesel generator control circuit, and the master station controller and the master station multifunctional power supply are in communication connection with the master station diesel generator controller; the diesel generator control circuit comprises a diesel generator and a diesel generator switch K701, the diesel generator is electrically connected with the load bus through the diesel generator switch K701, a sampling device CPT702 is arranged between the diesel generator and the diesel generator switch K701, and the sampling device CPT701 is arranged between the diesel generator switch K701 and the load bus; the diesel generator, the sampling device CPT702, the sampling device CPT701 and the generator switch K701 are respectively in communication connection with the master station diesel generator controller.
As shown in fig. 7 and 8, the zone controller includes a zone coordination control unit layer and a zone function control unit layer; the regional coordination control unit layer comprises a regional communication control unit and a regional function coordination control unit; the regional function control unit layer comprises a regional detection unit, a regional switch control unit, a regional multifunctional power supply control unit, a branch switch state collection control unit and a communication transceiving control unit; the area communication control unit is in communication connection with the area function coordination control unit; the regional function coordination control unit is in communication connection with the regional voltage and current detector, the regional switch, the regional multifunctional power supply and the n branch switches through the regional detection unit, the regional switch control unit, the regional multifunctional power supply control unit and the branch switch state collection control unit respectively, and the regional communication control unit is in communication connection with the regional communication coupler through the regional communication transceiving control unit.
The regional controller sets the functions of fault removal in the region, trial start after fault removal and automatic recovery of grid connection, and achieves fault self-healing in the region.
And a switch is arranged between each load branch and the regional load sub-bus in the region. When the branch load has a fault, the switch of the branch where the load is located is disconnected, the fault is removed, the area switch is kept closed, the area controller feeds back the disconnection signal of the branch switch which has received the specific fault, and the signal is uploaded to the main station controller to be displayed on the main station human-computer interface.
When a branch load fails and a branch switch where the load is located refuses to operate or a fault point is located on a regional load master-slave line, a regional switch is disconnected, a regional controller uploads a fault message to a main station controller, and the regional multifunctional power supply is authorized to start in a test mode; after the trial starting fails and the fault is still confirmed, the regional controller submits a message to the main controller to require manual troubleshooting; after the trial starting is successful and the fault is confirmed to be eliminated, the regional multifunctional power supply adjusts the voltage, the frequency and the phase in the region by taking the line as a reference, closes a regional switch after the adjustment is finished, and restores the power supply of the line to the region.
As shown in fig. 9, the area multifunctional power supply includes an area main control unit, an area basic control unit and an area main circuit, the area basic control unit includes an area power supply function implementing basic control unit and an area energy storage element management unit, the area main circuit includes an area soft start switch group K21, an area current transformation circuit unit IGBT21 and an area energy storage element unit BMS21, the area controller is communicatively connected to the area main control unit, and the area main control unit is communicatively connected to the area power supply function implementing basic control unit and the area energy storage element management unit; the regional energy storage element unit BMS21 is in communication connection with the regional energy storage element management unit; the region soft start switch group K21 and the region current transformation circuit unit IGBT21 are in communication connection with the region power supply function realization basic control unit; the regional energy storage element unit BMS21 is electrically connected with the regional converter circuit unit IGBT21, the regional converter circuit unit IGBT21 is electrically connected with one end of the regional soft start switch group K21, and the other end of the regional soft start switch group K21 is electrically connected with the regional load son-son wire; a sampling device CPT21 is arranged between the region soft start switch group K21 and the region current transformation circuit unit IGBT21, and the signal output end of the sampling device CPT21 is in communication connection with the region power supply function realization basic control unit; a sampling device CPT22 is arranged between the area current transformation circuit unit IGBT21 and the area energy storage element unit BMS21, and the sampling device CPT22 is respectively in communication connection with the area power supply function realization basic control unit and the area energy storage element management unit;
the regional multifunctional power supply is provided with a regional trial start function. After receiving the authorization of the zone controller, the zone multifunctional power supply tries to establish voltage and frequency as a main power supply in the zone, gradually recovers the power supply of each load branch in the zone, and reports a trial starting result to the zone controller.
As shown in fig. 9, the regional multifunctional power supply is configured with a standby power mode and a reactive power compensation mode, and is implemented by matching a regional power supply function implementation basic control unit and a regional energy storage element management unit; the standby power mode and the reactive compensation mode are jointly realized by a 'power supply function realization basic control unit' and an 'energy storage element management unit' of a basic control unit layer. A set of hardware circuit is adopted, and only the software control algorithm is different. In the standby power mode, the basic control unit layer controls the main loop, and the energy storage element unit discharges to provide all energy. In the reactive compensation mode, the energy storage element unit only provides part of energy or charges the energy for compensation required by the function, and the energy mainly comes from the load bus. The circuit is the same, and the software is different, and different mode, function are different.
The regional multifunctional power supply sets a standby power mode. When the power supply of the line connected with the load bus is abnormal, the regional controller controls to disconnect the regional switch connected with the load bus, and the regional multifunctional power supply is converted into a standby power supply in the region to supply power to the load in the region.
When the power supply of a line connected with the load bus is recovered to be normal, the regional multifunctional power supply adjusts the voltage, the frequency and the phase position in the region by taking the line as a reference, the regional switch is closed after the adjustment is completed, the regional multifunctional power supply is switched from the standby power mode to the reactive power compensation mode, and the line is recovered to supply power to the region.
The regional multifunctional power supply has a reactive compensation mode. Under the reactive mode, the regional multifunctional power supply realizes the reactive compensation function of a conventional line and the auxiliary starting compensation function of a high-power load.
Under normal working conditions, the line reactive loss between the connection load bus and the regional load sub-bus and the regional load reactive loss are relatively stable and cannot change suddenly greatly, and the regional multifunctional power supply only performs stable conventional reactive compensation on the region. When a high-power motor load starts in an area, reactive loss is greatly changed suddenly, so that the voltage of a load sub-bus in the area and even the voltage of a load bus are greatly dropped, the reactive compensation amount of a multifunctional power supply in the area is increased instantly, and the voltage dropping amplitude of the bus is reduced; when the starting is finished, the regional multifunctional power supply is recovered to be only used for stable conventional reactive compensation.
As shown in fig. 10, the area switch includes an area switch controller and an area switch circuit, the area controller and the area multifunctional power supply are in communication connection with the area switch controller, and the area switch circuit is an area switch K501; one end of the area switch K501 is electrically connected with the load bus, and the other end of the area switch K501 is electrically connected with the area load primary-secondary wire; a sampling device CTP501 is arranged between the area switch K501 and the load bus bar, a sampling device CPT502 is arranged between the area switch K501 and the area load sub bus bar, and the signal output ends of the sampling device CTP501 and the sampling device CPT502 are in communication connection with the area switch controller; the area switch K501 is in communication connection with the area switch controller;
as shown in fig. 11, the branch switch includes a branch switch controller and a branch switch circuit, the area controller is in communication connection with the branch switch controller, the branch switch circuit is a branch switch K401, one end of the branch switch K401 is electrically connected to the area load primary and secondary wires, the other end of the branch switch K401 is electrically connected to the branch load, and the branch switch K401 is in communication connection with the branch switch controller.
Embodiment 2, intelligent high-reliability low-voltage power supply and distribution method based on radial wiring, including the following steps:
(1) the method of the installation embodiment 1 is used for building an intelligent high-reliability low-voltage supply and distribution system based on radial wiring to build main station equipment and regional station equipment, and connecting a circuit line and a communication line of the main station equipment and the regional station equipment;
(1-1) selecting a grid-connected switch, a main station diesel generator and a main station multifunctional power supply according to the actual power supply and distribution capacity and voltage grade requirements;
(1-2) selecting a regional switch and a regional multifunctional power supply according to the power consumption capacity and voltage of each load region;
(1-3) selecting a branch switch of a specific load branch according to the specific load size and voltage of a load area;
(1-4) the system sets a master station device: sequentially accessing a communication wave trap, a master station power supply bus voltage and current detection module and a grid-connected switch after a power supply bus access point to reach a load bus; the load bus is electrically connected with the master station communication coupler, the master station diesel generator and the master station multifunctional power supply; setting a main station controller and a human-computer interaction interface; the master station controller is respectively in communication connection with the master station communication coupler, the master station diesel generator, the master station multifunctional power supply, the communication wave trap, the master station power supply bus voltage and current detection module, the grid-connected switch and the human-computer interaction interface; the master station multifunctional power supply is also in communication connection with the master station power supply bus voltage and current detection module, the grid-connected switch and the master station diesel generator respectively;
the system sets regional station equipment of the load region according to the distribution situation of the load region: connecting a power supply line to the load busbar, and connecting a regional voltage and current detection module and a regional switch in sequence after the other end of the line reaches a load region to reach a regional load sub-busbar; the regional load master-slave line is connected with the regional communication coupler and the regional multifunctional power supply; n branch switches between the regional load sub-bus and the branch loads; setting a region controller; the zone controller is in electrical communication with the zone voltage current detector, the zone switch, the zone communication coupler, the zone multifunction power supply, and the n branch switches; the regional multifunctional power supply is in communication connection with the regional switch.
The system is divided into a plurality of load areas according to the positions of loads, and each load area is connected with a load bus of the system main station through respective lines to form radiation type wiring.
(2) The method comprises the steps that the types, characteristics and parameters of equipment in main station equipment and regional station equipment are recorded in a main station human-computer interface, and the load grade and power supply requirement of each load region are set;
(3) inputting a corresponding control strategy on a human-computer interface, controlling the functions of master station equipment and controlling the functions of each regional station equipment;
(4) and starting operation, and then realizing a self-checking state, a static operation state, a dynamic coordination state, a master station equipment fault state and a system shutdown state according to the regional load.
The self-checking state is as follows: the method comprises the following steps of completing system construction, completing strategy presetting of a master station controller and a zone controller, and starting the system, wherein the master station controller carries out self-checking on master station equipment and zone controller equipment to which the zone controller belongs; if the system state is normal, displaying whether to start on a human-computer interaction interface, and waiting for the next operation; if the system has a fault, displaying fault information on a human-computer interaction interface, forbidding starting, and waiting for manual fault removal; if a specific equipment fault is found, shielding the fault equipment on a human-computer interaction interface, or starting self-checking again after manually removing the equipment fault;
the static operating state is as follows: the master station equipment normally runs, and the load in the area is directly started without a high-power motor; the master station diesel generator is in a cold backup non-starting state, and the master station multifunctional power supply is in an auxiliary power supply state; the N regional multifunctional power supplies are in a reactive compensation mode, and only stable conventional reactive compensation is carried out on the regions where the multifunctional power supplies are located.
The dynamic coordination states include 7 dynamic coordination states, which are specifically as follows:
dynamic coordination state 1: the main station equipment normally runs, when a high-power motor is loaded in an area and is directly started, the diesel generator of the main station is in a cold backup non-starting state, and the multifunctional power supply of the main station is in an auxiliary power supply state; the N regional multifunctional power supplies are in a reactive compensation mode, the regional multifunctional power supplies in the regions where the high-power motors are located in the starting process have the function of high-power load auxiliary starting compensation, reactive loss with large mutation is compensated, and voltage fluctuation of regional load sub-buses and load buses is restrained;
dynamic coordination state 2: the main station equipment normally operates, when faults occur in one or more load areas, the branch switch of the branch where the faults are located is tripped, the faults are successfully cut off, the area switch where the faults are located keeps a closed state, and after receiving a branch switch feedback signal, the area controller of the area where the faults are located uploads the branch switch feedback signal to the main station controller, displays the branch switch feedback signal on a human-computer interface and notifies a human to maintain the fault branch;
in the dynamic coordination state 3, the master station equipment normally operates, and after a fault occurs in one or more load areas, the branch switch of the branch where the fault exists refuses to operate, or when the fault point is located on the load master-slave line of the area, the area switch where the fault exists is disconnected; the method comprises the following steps that a region controller where a fault is located and a region multifunctional power supply where the fault is located are matched with each other to achieve the purpose of trying to start, sending a message for applying for re-grid connection to a main station controller, and trying to self-heal the fault in the region in the circulating process of automatically recovering the grid connection function; if the fault self-healing can not be realized, uploading the fault self-healing to a main station controller, displaying the fault self-healing to a human-computer interface, and informing a worker to maintain the fault branch circuit;
state coordination state 4: the main station equipment normally operates, and after a fault occurs in one or more load areas, the branch switch of the branch where the fault exists refuses to operate, or when the fault point is positioned on the load master-slave line of the area, the area switch where the fault exists is disconnected; the fault self-healing in the area dominated by the fault area controller fails, the area switch keeps a disconnected state, and the area controller submits a message to the master station controller and displays the message on a master station human-computer interface to require manual fault removal;
dynamic coordination state 5: the master station equipment normally operates, the voltage of a load bus is low due to low voltage of the power supply bus or overlarge total load of N areas, and the master station controller sends area load cutting instructions to each area controller step by step according to preset power supply priority until the voltage of the load bus returns to a normal value, so that power supply of the load area with high priority is ensured;
dynamic coordination state 6: when the power supply bus is abnormal, the multifunctional power supply of the master station adopts a main power supply mode to seamlessly switch the power supply in the system to the diesel generator of the master station; when the power supply bus is detected to be recovered to normal, the diesel generator is turned off, the main station multifunctional power supply adopts a main power supply mode, and power supply in the system is seamlessly switched back to the power supply bus; the load of each area is in a normal working state;
dynamic coordination state 7: when the power supply bus is abnormal, the main power mode of the main station multifunctional power supply is not enabled, the regional multifunctional power supply is enabled in the standby power mode, each regional controller disconnects the regional switch, and the regional multifunctional power supply enters the standby power mode to supply power to the load in the region; when the condition that the power supply bus is recovered to be normal is detected, the regional multifunctional power supply seamlessly switches the power supply inside the region back to the power supply line bus; the standby power mode of the regional multifunctional power supply is not enabled, and the regional multifunctional power supply interrupts the power supply of the load in the region.
Master station device fault status: the master station equipment breaks down, the standby power mode of the regional multifunctional power supply is enabled, each regional controller disconnects a regional switch, and the regional multifunctional power supply enters the standby power mode to supply power to loads in the region until the energy stored by the regional multifunctional power supply is exhausted; the standby power mode of the regional multifunctional power supply is not enabled, and the load power supply in the region is interrupted;
a system shutdown state: the main station controller is manually shut down on a man-machine interface, the main station controller sends a shut-down instruction to each zone controller, and the system enters a shut-down state.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications are possible which remain within the scope of the appended claims.

Claims (10)

1.一种基于放射式接线的智能化高可靠性低压供配电系统，其特征在于，包括在供电母线与负荷母线之间的主站设备，以及在负荷母线与负荷之间的N个区域站设备，其中N为大于等于1的自然数；1. An intelligent high-reliability low-voltage power supply and distribution system based on radial wiring, characterized in that it includes the main station equipment between the power supply bus and the load bus, and N areas between the load bus and the load Station equipment, where N is a natural number greater than or equal to 1; 所述主站设备包括主站控制器、主站通信耦合器、主站柴油发电机、主站多功能电源、通信阻波器、主站供电母线电压电流检测模块、并网开关和人机交互界面；所述供电母线的电流输出端，依次与所述通信阻波器、所述主站供电母线电压电流检测模块、所述并网开关和所述负荷母线的电流输入端电连接；所述主站通信耦合器、所述主站柴油发电机和所述主站多功能电源分别与所述负荷母线电连接；所述主站控制器分别与所述主站通信耦合器、所述主站柴油发电机、所述主站多功能电源、所述通信阻波器、所述主站供电母线电压电流检测模块、所述并网开关和所述人机交互界面通信连接；所述主站多功能电还分别与所述主站供电母线电压电流检测模块、所述并网开关、所述主站柴油发电机通信连接；The main station equipment includes the main station controller, the main station communication coupler, the main station diesel generator, the main station multi-function power supply, the communication wave arrester, the main station power supply bus voltage and current detection module, the grid connection switch and the human-computer interaction. interface; the current output end of the power supply bus is electrically connected to the communication wave arrester, the voltage and current detection module of the main station power supply bus, the grid-connected switch and the current input end of the load bus in sequence; the The master station communication coupler, the master station diesel generator and the master station multifunctional power supply are respectively electrically connected to the load bus; the master station controller is respectively connected to the master station communication coupler, the master station Diesel generator, the multi-function power supply of the main station, the communication wave arrester, the voltage and current detection module of the power supply bus of the main station, the grid-connected switch and the man-machine interface are in communication connection; The functional power is also respectively connected to the main station power supply bus voltage and current detection module, the grid-connected switch, and the main station diesel generator; 每个所述区域站设备包括负荷母线与区域负荷子母线之间的区域电压电流检测器、区域开关、区域通信耦合器、区域多功能电源和区域控制器，以及在区域负荷子母线与支路负荷之间的n个支路开关，其中n为大于等于1的自然数；所述负荷母线的电流输出端，依次通过所述区域电压电流检测器和所述区域开关与所述区域负荷子母线电流输入端电连接，所述区域多功能电源与所述区域负荷子母线电连接；所述区域通信耦合器位于所述负荷母线与所述区域电压电流检测器之间；所述区域负荷子母线与n个支路开关电连接；所述区域控制器与所述区域电压电流检测器、所述区域开关、所述区域通信耦合器、所述区域多功能电源和n个支路开关电通信连接；所述区域多功能电源与所述区域开关通信连接。Each of the regional station equipment includes a regional voltage and current detector, a regional switch, a regional communication coupler, a regional multi-function power supply and a regional controller between the load bus and the regional load sub-bus, and between the regional load sub-bus and branch circuits n branch switches between loads, where n is a natural number greater than or equal to 1; the current output terminal of the load bus passes through the regional voltage and current detector and the regional switch and the regional load sub-bus current in sequence The input terminal is electrically connected, and the regional multi-function power supply is electrically connected to the regional load sub-bus; the regional communication coupler is located between the load bus and the regional voltage and current detector; the regional load sub-bus is connected to the regional load sub-bus. The n branch switches are electrically connected; the area controller is connected in electrical communication with the area voltage and current detector, the area switch, the area communication coupler, the area multifunctional power supply and the n branch switches; The area multifunctional power supply is connected in communication with the area switch. 2.根据权利要求1所述的基于放射式接线的智能化高可靠性低压供配电系统，其特征在于，所述主站控制器包括协调控制单元层和功能控制单元层；所述协调控制单元层包括主站通信控制单元和主站功能协调控制单元；所述功能控制单元层包括供电母线检测单元、并网开关控制单元、多功能电源控制单元、柴油发电机控制单元、通信阻波器监控单元和通信收发控制单元；所述人机交互界面与所述主站通信控制单元通信连接，所述主站通信控制单元和所述主站功能协调控制单元通信连接；所述主站功能协调控制单元分别通过所述供电母线检测单元、所述并网开关控制单元、所述多功能电源控制单元、所述柴油发电机控制单元与所述主站供电母线电压电流检测模块、所述并网开关、所述主站多功能电源、所述主站柴油发电机通信连接，所述主站通信控制单元分别通过所述通信阻波器监控单元和所述通信收发控制单元与所述通信阻波器和主站通信耦合器通信连接。2. The intelligent high-reliability low-voltage power supply and distribution system based on radial wiring according to claim 1, wherein the master station controller comprises a coordinated control unit layer and a functional control unit layer; the coordinated control The unit layer includes the master station communication control unit and the master station function coordination control unit; the function control unit layer includes the power supply busbar detection unit, the grid-connected switch control unit, the multi-function power supply control unit, the diesel generator control unit, and the communication wave damper. a monitoring unit and a communication transceiver control unit; the man-machine interface is communicatively connected with the master station communication control unit, and the master station communication control unit is communicatively connected with the master station function coordination control unit; the master station function coordination control unit is communicatively connected The control unit passes through the power supply busbar detection unit, the grid-connected switch control unit, the multi-function power supply control unit, the diesel generator control unit and the main station power supply busbar voltage and current detection module, the grid-connected control unit, respectively. The switch, the multi-function power supply of the main station, and the diesel generator of the main station are communicatively connected, and the communication control unit of the main station communicates with the communication wave blocking unit through the communication wave blocking device monitoring unit and the communication sending and receiving control unit, respectively. communication connection between the controller and the master communication coupler. 3.根据权利要求2所述的基于放射式接线的智能化高可靠性低压供配电系统，其特征在于，所述主站多功能电源包括主站多功能电源主控制单元层、主站基本控制单元层和主站主电路，所述主站基本控制单元层包括主站电源功能实现基本控制单元和主站储能元件管理单元，所述主电路包括主站软启动开关组K11、主站变流电路单元IGBT11和主站储能元件单元BMS11，所述主站供电母线电压电流检测模块、所述并网开关、所述主站柴油发电机和所述主站控制器与所述主站多功能电源主控制单元层通信连，所述主站多功能电源主控制单元层与所述主站电源功能实现基本控制单元和所述主站储能元件管理单元通信连接；所述主站储能元件单元BMS11与所述主站储能元件管理单元通信连接；所述主站软启动开关组K11和所述主站变流电路单元IGBT11与所述主站电源功能实现基本控制单元通信连接；所述主站储能元件单元BMS11与所述主站变流电路单元IGBT11电连接，所述主站变流电路单元IGBT11与所述主站软启动开关组K11的一端电连接，所述主站软启动开关组K11的另一端与所述负荷母线电连接；在所述主站软启动开关组K11和所述主站变流电路单元IGBT11之间设有采样装置CPT11，采样装置CPT11信号输出端与所述，在主站电源功能实现基本控制单元通信连接；在所述主站变流电路单元IGBT11和主站储能元件单元BMS11之间设有采样装置CPT12，采样装置CPT12分别与所述主站电源功能实现基本控制单元和所述主站储能元件管理单元通信连接；3. The intelligent high-reliability low-voltage power supply and distribution system based on radial wiring according to claim 2, wherein the main station multifunctional power supply comprises a main station multifunctional power supply main control unit layer, a main station basic The control unit layer and the main circuit of the main station, the basic control unit layer of the main station includes the basic control unit for realizing the power supply function of the main station and the energy storage element management unit of the main station, and the main circuit includes the soft-start switch group K11 of the main station, the main station The converter circuit unit IGBT11 and the main station energy storage element unit BMS11, the main station power supply bus voltage and current detection module, the grid connection switch, the main station diesel generator and the main station controller and the main station The multifunctional power supply main control unit layer is communicatively connected, and the main multifunctional power supply main control unit layer of the main station is communicatively connected with the main station power supply function realization basic control unit and the main station energy storage element management unit; The energy element unit BMS11 is communicatively connected with the master station energy storage element management unit; the master station soft-start switch group K11 and the master station converter circuit unit IGBT11 are communicatively connected with the master station power supply function to realize the basic control unit; The main station energy storage element unit BMS11 is electrically connected to the main station converter circuit unit IGBT11, the main station converter circuit unit IGBT11 is electrically connected to one end of the main station soft-start switch group K11, and the main station The other end of the soft-start switch group K11 is electrically connected to the load bus; a sampling device CPT11 is provided between the main station soft-start switch group K11 and the main station converter circuit unit IGBT11, and the signal output end of the sampling device CPT11 As mentioned above, the communication connection of the basic control unit is realized in the main station power supply function; a sampling device CPT12 is provided between the main station converter circuit unit IGBT11 and the main station energy storage element unit BMS11, and the sampling device CPT12 is respectively connected with the main station. The station power supply function realizes the communication connection between the basic control unit and the main station energy storage element management unit; 所述主站多功能电源设置主电源模式和辅助电源模式，由主站电源功能实现基本控制单元和主站储能元件管理单元配合实现；当仅启动主站电源功能实现基本控制单元时，为辅助电源模式；主站控制器能使主站多功能电源实现自动模式切换，主站多功能电源实现供电母线与主站柴油发电机之间的无缝切换。The main station multi-function power supply is set to a main power supply mode and an auxiliary power supply mode, and the main station power supply function realizes the basic control unit and the main station energy storage element management unit. When only the main station power supply function is activated to realize the basic control unit, it is Auxiliary power supply mode; the master station controller can make the master station multi-function power supply realize automatic mode switching, and the master station multi-function power supply realizes seamless switching between the power supply bus and the master station diesel generator. 4.根据权利要求2所述的基于放射式接线的智能化高可靠性低压供配电系统，其特征在于，所述并网开关包括并网开关控制器和并网开关电路，所述主站控制器和所述主站多功能电源与所述并网开关控制器通信连接，所述并网开关电路为并网开关K601；所述并网开关K601的一端与所述供电母线电连接、所述并网开关K601的另一端与所述负荷母线电连接；在所述并网开关K601与所述供电母线电连接之间设有采样装置CTP601，在并网开关K601与所述负荷母线之间设有采样装置CPT602，所述采样装置CTP601和采样装置CPT602的信号输出端与所述并网开关控制器输入端通信连接；所述并网开关K601与所述并网开关控制器通信连接；4. The intelligent high-reliability low-voltage power supply and distribution system based on radial wiring according to claim 2, wherein the grid-connected switch comprises a grid-connected switch controller and a grid-connected switch circuit, and the main station The controller and the multifunctional power supply of the main station are connected in communication with the grid-connected switch controller, and the grid-connected switch circuit is a grid-connected switch K601; one end of the grid-connected switch K601 is electrically connected to the power supply bus, and the The other end of the grid-connected switch K601 is electrically connected to the load bus; a sampling device CTP601 is provided between the grid-connected switch K601 and the power supply bus, and between the grid-connected switch K601 and the load bus A sampling device CPT602 is provided, and the signal output ends of the sampling device CTP601 and the sampling device CPT602 are connected in communication with the input end of the grid-connected switch controller; the grid-connected switch K601 is connected in communication with the grid-connected switch controller; 所述主站柴油发电机包括主站柴油发电机控制器和柴油发电机控制电路，所述主站控制器和所述主站多功能电源与所述主站柴油发电机控制器通信连接；所述柴油发电机控制电路包括柴油发电机和柴油发电机开关K701，所述柴油发电机通过所述柴油发电机开关K701与所述负荷母线电连接，所述柴油发电机与所述柴油发电机开关K701之间设有采样装置CPT702，所述柴油发电机开关K701与所述负荷母线之间设有采样装置CPT701；所述柴油发电机、采样装置CPT702、采样装置CPT701和发电机开关K701分别与所述主站柴油发电机控制器通信连接。The main station diesel generator includes a main station diesel generator controller and a diesel generator control circuit, and the main station controller and the main station multifunctional power supply are connected in communication with the main station diesel generator controller; The diesel generator control circuit includes a diesel generator and a diesel generator switch K701, the diesel generator is electrically connected to the load bus through the diesel generator switch K701, and the diesel generator is connected to the diesel generator switch K701. A sampling device CPT702 is arranged between K701, and a sampling device CPT701 is arranged between the diesel generator switch K701 and the load bus; the diesel generator, the sampling device CPT702, the sampling device CPT701 and the generator switch K701 are respectively connected with the The main station diesel generator controller communication connection. 5.根据权利要求1所述的基于放射式接线的智能化高可靠性低压供配电系统，其特征在于，所述区域控制器包括区域协调控制单元层和区域功能控制单元层；所述区域协调控制单元层包括区域通信控制单元和区域功能协调控制单元；所述区域功能控制单元层包括区域检测单元、区域开关控制单元、区域多功能电源控制单元、支路开关状态收集控制单元和通信收发控制单元；所述区域通信控制单元和所述区域功能协调控制单元通信连接；所述区域功能协调控制单元分别通过所述区域检测单元、所述区域开关控制单元、所述区域多功能电源控制单元、所述支路开关状态收集控制单元与所述区域电压电流检测器、所述区域开关、所述区域多功能电源、n个所述支路开关通信连接，所述区域通信控制单元通过所述区域通信收发控制单元与区域通信耦合器通信连接。5 . The intelligent high-reliability low-voltage power supply and distribution system based on radial wiring according to claim 1 , wherein the area controller comprises an area coordination control unit layer and an area function control unit layer; the area The coordination control unit layer includes an area communication control unit and an area function coordination control unit; the area function control unit layer includes an area detection unit, an area switch control unit, an area multifunctional power supply control unit, a branch switch state collection control unit, and a communication transceiver a control unit; the area communication control unit is communicatively connected to the area function coordination control unit; the area function coordination control unit passes through the area detection unit, the area switch control unit, and the area multifunctional power supply control unit respectively , The branch switch state collection control unit is connected in communication with the regional voltage and current detector, the regional switch, the regional multi-function power supply, and n of the branch switches, and the regional communication control unit passes the The area communication transceiver control unit is connected in communication with the area communication coupler. 所述区域多功能电源包括区域主控制单元层、区域基本控制单元层和区域主电路，所述区域基本控制单元层包括区域电源功能实现基本控制单元和区域储能元件管理单元，所述区域主电路包括区域软启动开关组K21、区域变流电路单元IGBT21和区域储能元件单元BMS21，所述区域控制器与所述区域主控制单元层的区域多功能电源主控制单元通信连接，所述区域多功能电源主控制单元与所述区域电源功能实现基本控制单元和所述区域储能元件管理单元通信连接；所述区域储能元件单元BMS21与所述区域储能元件管理单元通信连接；所述区域软启动开关组K21和所述区域变流电路单元IGBT21与所述区域电源功能实现基本控制单元通信连接；所述区域储能元件单元BMS21与所述区域变流电路单元IGBT21电连接，所述区域变流电路单元IGBT21与所述区域软启动开关组K21的一端电连接，所述区域软启动开关组K21的另一端与所述区域负荷子母线电连接；在所述区域软启动开关组K21和所述区域变流电路单元IGBT21之间设有采样装置CPT21，采样装置CPT21信号输出端与所述区域电源功能实现基本控制单元通信连接；在所述区域变流电路单元IGBT21和区域储能元件单元BMS21之间设有采样装置CPT22，采样装置CPT22分别与所述区域电源功能实现基本控制单元和所述区域储能元件管理单元通信连接；The regional multi-function power supply includes a regional main control unit layer, a regional basic control unit layer and a regional main circuit. The regional basic control unit layer includes a regional power supply function realization basic control unit and a regional energy storage element management unit. The circuit includes a regional soft-start switch group K21, a regional converter circuit unit IGBT21 and a regional energy storage element unit BMS21, and the regional controller is communicatively connected to the regional multifunctional power supply main control unit at the regional main control unit layer. The main control unit of the multifunctional power supply is in communication connection with the regional power supply function realization basic control unit and the regional energy storage element management unit; the regional energy storage element unit BMS21 is in communication connection with the regional energy storage element management unit; the The regional soft-start switch group K21 and the regional converter circuit unit IGBT21 are communicatively connected to the basic control unit for realizing the regional power supply function; the regional energy storage element unit BMS21 is electrically connected to the regional converter circuit unit IGBT21, and the The regional converter circuit unit IGBT21 is electrically connected to one end of the regional soft-start switch group K21, and the other end of the regional soft-start switch group K21 is electrically connected to the regional load sub-bus; in the regional soft-start switch group K21 A sampling device CPT21 is arranged between the regional converter circuit unit IGBT21, and the signal output end of the sampling device CPT21 is connected to the basic control unit for realizing the function of the regional power supply; in the regional converter circuit unit IGBT21 and the regional energy storage element A sampling device CPT22 is provided between the units BMS21, and the sampling device CPT22 is respectively connected in communication with the regional power supply function realization basic control unit and the regional energy storage element management unit; 所述区域多功能电源设置备用电模式和无功补偿模式，由区域电源功能实现基本控制单元和区域储能元件管理单元配合实现；The regional multi-function power supply is provided with a backup power mode and a reactive power compensation mode, which is realized by the cooperation of the regional power supply function realization basic control unit and the regional energy storage element management unit; 所述区域开关包括区域开关控制器和区域开关电路，所述区域控制器和所述区域多功能电源与所述区域开关控制器通信连接，所述区域开关电路为区域开关K501；所述区域开关K501的一端与所述负荷母线电连接、所述区域开关K501的另一端与所述区域负荷子母线电连接；在所述区域开关K501与所述负荷母线电连接之间设有采样装置CTP501，在区域开关K501与所述区域负荷子母线之间设有采样装置CPT502，所述采样装置CTP501和采样装置CPT502的信号输出端与所述区域开关控制器通信连接；所述区域开关K501与所述区域开关控制器通信连接；The zone switch includes a zone switch controller and a zone switch circuit, the zone controller and the zone multifunctional power supply are connected in communication with the zone switch controller, and the zone switch circuit is a zone switch K501; the zone switch One end of K501 is electrically connected to the load busbar, and the other end of the zone switch K501 is electrically connected to the zone load sub-busbar; a sampling device CTP501 is provided between the zone switch K501 and the load busbar electrical connection, A sampling device CPT502 is arranged between the zone switch K501 and the zone load sub-bus, and the signal output terminals of the sampling device CTP501 and the sampling device CPT502 are connected in communication with the zone switch controller; the zone switch K501 is connected to the zone switch controller. Area switch controller communication connection; 所述支路开关包括支路开关控制器和支路开关电路，所述区域控制器的与所述支路开关控制器通信连接，所述支路开关电路为支路开关K401，所述支路开关K401的一端与区域负荷子母线电连接，所述支路开关K401的另一端与所述支路负荷电连接，所述支路开关K401与所述支路开关控制器通信连接。The branch switch includes a branch switch controller and a branch switch circuit, the area controller is connected in communication with the branch switch controller, the branch switch circuit is a branch switch K401, and the branch switch One end of the switch K401 is electrically connected to the regional load sub-bus, the other end of the branch switch K401 is electrically connected to the branch load, and the branch switch K401 is communicatively connected to the branch switch controller. 6.基于放射式接线的智能化高可靠性低压供配电方法，其特征在于，包括如下步骤：6. An intelligent high-reliability low-voltage power supply and distribution method based on radial wiring, characterized in that it comprises the following steps: (1)安装权利要求1-5任一所述的基于放射式接线的智能化高可靠性低压供配系统搭建主站设备和区域站设备，并连接主站设备和区域站设备的电路线路和通信线路；(1) Install the intelligent high-reliability low-voltage supply and distribution system based on any one of claims 1-5 to build the main station equipment and the regional station equipment, and connect the circuit lines and the circuit lines of the main station equipment and the regional station equipment. communication line; (2)在主站人机界面录入主站设备和区域站设备中设备类型、特性和参数，设置各个负荷区域的负荷等级和供电要求；(2) Enter the equipment types, characteristics and parameters in the main station equipment and the regional station equipment in the main station man-machine interface, and set the load level and power supply requirements of each load area; (3)在人机界面输入对应控制策略，控制主站设备功能，控制各个区域站设备功能；(3) Input the corresponding control strategy on the man-machine interface, control the function of the master station equipment, and control the function of each regional station equipment; (4)启动运行，然后根据区域负荷实现自检状态、静态运行状态、动态协调状态、主站设备故障状态和系统停机状态。(4) Start operation, and then realize self-check state, static operation state, dynamic coordination state, master station equipment failure state and system shutdown state according to the regional load. 7.根据权利要求6所述的基于放射式接线的智能化高可靠性低压供配电方法，其特征在于，在步骤(1)中，包括如下步骤：7. The intelligent high-reliability low-voltage power supply and distribution method based on radial wiring according to claim 6, characterized in that, in step (1), comprising the following steps: (1-1)根据实际供配电容量和电压等级需要，选择并网开关、主站柴油发电机和主站多功能电源；(1-1) According to the actual power supply and distribution capacity and voltage level needs, select the grid-connected switch, the main station diesel generator and the main station multi-function power supply; (1-2)根据各个负荷区域的用电容量和电压，选择区域开关、区域多功能电源；(1-2) According to the electric capacity and voltage of each load area, select the regional switch and regional multi-function power supply; (1-3)根据负荷区域的具体负荷大小和电压，选择具体负荷支路的支路开关；(1-3) According to the specific load size and voltage of the load area, select the branch switch of the specific load branch; (1-4)系统设置主站设备：在供电母线接入点后依次接入通信阻波器、主站供电母线电压电流检测模块、并网开关，到达负荷母线；负荷母线电连接主站通信耦合器、主站柴油发电机和主站多功能电源；设置主站控制器和人机交互界面；所述主站控制器分别与所述主站通信耦合器、所述主站柴油发电机、所述主站多功能电源、所述通信阻波器、所述主站供电母线电压电流检测模块、所述并网开关和人机交互界面通信连接；所述主站多功能电还分别与所述主站供电母线电压电流检测模块、所述并网开关、所述主站柴油发电机通信连接；(1-4) The system sets the main station equipment: after the power supply bus access point, connect the communication wave arrester, the main station power supply bus voltage and current detection module, the grid connection switch, and reach the load bus; the load bus is electrically connected to the main station for communication coupler, main station diesel generator and main station multi-function power supply; set main station controller and man-machine interface; said main station controller communicates with said main station coupler, said main station diesel generator, The main station multi-function power supply, the communication wave arrester, the main station power supply bus voltage and current detection module, the grid-connected switch and the man-machine interface are in communication connection; the main station multi-function power supply is also respectively connected with the The main station power supply bus voltage and current detection module, the grid-connected switch, and the main station diesel generator are communicatively connected; 系统根据负荷区域分布情况设置负荷区域的区域站设备：在负荷母线上接供电线路，线路另一端到达负荷区域后，依次连接区域电压电流检测模块、区域开关，到达区域负荷子母线；区域负荷子母线连接区域多功能电源；区域通信耦合器位于连接负荷母线上接供电线路与区域电压电流检测模块之间；在区域负荷子母线与支路负荷之间的n个支路开关；设置区域控制器；所述区域控制器与所述区域电压电流检测器、所述区域开关、所述区域通信耦合器、所述区域多功能电源和n个支路开关电通信连接；所述区域多功能电源与所述区域开关通信连接。The system sets the regional station equipment in the load area according to the distribution of the load area: connect the power supply line on the load bus, and after the other end of the line reaches the load area, connect the regional voltage and current detection module and the regional switch in turn to reach the regional load sub-bus; The bus is connected to the regional multi-function power supply; the regional communication coupler is located between the power supply line on the connection load bus and the regional voltage and current detection module; n branch switches between the regional load sub-bus and the branch load; set the regional controller ; the regional controller is connected in electrical communication with the regional voltage and current detector, the regional switch, the regional communication coupler, the regional multifunctional power supply and n branch switches; the regional multifunctional power supply is connected to the The zone switches are communicatively connected. 8.根据权利要求6所述的基于放射式接线的智能化高可靠性低压供配电方法，其特征在于，在步骤(4)中：所述自检状态为：系统搭建完成、主站控制器及区域控制器策略预设完成、系统启动，主站控制器对主站设备、区域控制器对所属区域站设备进行自检；若系统状态正常，则在人机交互界面上显示是否启动，等待下一步操作；若系统存在故障，在人机交互界面显示故障信息，禁止启动，等待人工故障排除；若发现具体设备故障，在人机交互界面上将故障设备屏蔽，或人工排除设备故障后再次启动自检；8. The intelligent high-reliability low-voltage power supply and distribution method based on radial wiring according to claim 6, characterized in that, in step (4): the self-checking state is: the system is set up and the master station controls After the strategy preset of the controller and the regional controller is completed and the system is started, the master station controller conducts a self-check on the master station device and the regional controller on the subordinate regional station equipment; Wait for the next operation; if there is a fault in the system, display the fault information on the human-computer interaction interface, prohibit the startup, and wait for manual troubleshooting; if a specific equipment fault is found, shield the faulty equipment on the human-computer interaction interface, or manually remove the equipment fault. Start the self-test again; 静态运行状态为：主站设备均正常运行，区域内负荷没有大功率电动机直接起动；主站柴油发电机处于冷备份不起动状态，主站多功能电源处于辅助电源状态；N个区域多功能电源处于无功补偿模式，且仅对所在区域做稳定的常规无功补偿。The static operation state is: the main station equipment is in normal operation, the load in the area is not directly started by the high-power motor; the main station diesel generator is in the cold backup state, the main station multi-functional power supply is in the auxiliary power supply state; N regional multi-functional power supplies It is in the reactive power compensation mode, and only performs stable conventional reactive power compensation for the area in which it is located. 9.根据权利要求6所述的基于放射式接线的智能化高可靠性低压供配电方法，其特征在于，在步骤(4)中：动态协调状态包括7种动态协调状态，具体如下：9. The intelligent high-reliability low-voltage power supply and distribution method based on radial wiring according to claim 6, is characterized in that, in step (4): the dynamic coordination state comprises 7 kinds of dynamic coordination states, and is specifically as follows: 动态协调状态1：主站设备均正常运行，区域内负荷有大功率电动机直接起动时，主站柴油发电机处于冷备份不起动状态，主站多功能电源处于辅助电源状态；N个区域多功能电源处于无功补偿模式，起动过程中大功率电动机所在区域的区域多功能电源起用大功率负荷辅助起动补偿功能，补偿大幅突变的无功损耗，抑制区域负荷子母线、负荷母线电压波动；Dynamic coordination state 1: The main station equipment is in normal operation. When the load in the area is directly started by a high-power motor, the main station diesel generator is in a cold backup state, and the main station multi-function power supply is in the auxiliary power supply state; The power supply is in the reactive power compensation mode. During the starting process, the regional multi-functional power supply in the area where the high-power motor is located uses the high-power load auxiliary starting compensation function to compensate for the large sudden change of reactive power loss and suppress the voltage fluctuations of the regional load sub-bus and load bus; 动态协调状态2：主站设备均正常运行，一个或多个负荷区域内发生故障时，跳开故障所在支路的支路开关，故障被成功切除，故障所在的区域开关保持闭合状态，故障所在区域的区域控制器收到支路开关反馈信号后，上传给主站控制器，并显示在人机界面上，通知人工维修故障支路；Dynamic coordination state 2: The master station equipment is in normal operation. When a fault occurs in one or more load areas, the branch switch of the branch where the fault is located is tripped, and the fault is successfully removed. The switch in the area where the fault is located remains closed. After receiving the feedback signal of the branch switch, the regional controller of the area uploads it to the master station controller, and displays it on the man-machine interface to notify the manual maintenance of the faulty branch; 动态协调状态3，主站设备均正常运行，一个或多个负荷区域内发生故障后，故障所在支路的支路开关拒动，或故障点位于区域负荷子母线上时，导致故障所在的区域开关断开；故障所在的区域控制器与故障所在的区域多功能电源相互配合实现试起动、向主站控制器发送申请重新并网报文、自动恢复并网功能的循环过程中，尝试区域内的故障自愈；如果不能实现故障自愈，上传给主站控制器，并显示在人机界面上，通知人工维修故障支路；Dynamic coordination state 3, the main station equipment is in normal operation, after a fault occurs in one or more load areas, the branch switch of the branch where the fault is located refuses to act, or when the fault point is located on the regional load sub-bus, the area where the fault is located is caused. The switch is disconnected; the area controller where the fault is located cooperates with the multi-function power supply in the area where the fault is located to realize trial start, send a message for reconnection to the main station controller, and automatically restore the grid connection function. If the fault self-healing cannot be realized, upload it to the master station controller and display it on the man-machine interface to notify the manual maintenance of the faulty branch; 态协调状态4：主站设备均正常运行，一个或多个负荷区域内发生故障后，故障所在支路的支路开关拒动，或故障点位于区域负荷子母线上时，导致故障所在的区域开关断开；故障区域控制器主导的区域内的故障自愈失败，区域开关保持断开状态，且区域控制器提交报文给主站控制器并显示在主站人机界面上，要求人工排除故障；State coordination state 4: The main station equipment is in normal operation. After a fault occurs in one or more load areas, the branch switch of the branch where the fault is located refuses to move, or when the fault point is located on the regional load sub-bus, the area where the fault is located will be caused. The switch is disconnected; the fault self-healing in the area dominated by the fault zone controller fails, the zone switch remains disconnected, and the zone controller submits a message to the master station controller and displays it on the master station HMI, requiring manual troubleshooting Fault; 动态协调状态5：主站设备均正常运行，由于供电母线电压偏低或N个区域的总负荷过大，导致负荷母线电压偏低，主站控制器按照事先设定的供电优先级，逐级向各个区域控制器发送区域负荷切除指令，直至负荷母线电压恢复正常值，保证优先级高的负荷区域供电；Dynamic coordination state 5: The main station equipment is in normal operation. Due to the low voltage of the power supply bus or the excessive total load of the N areas, the voltage of the load bus is low. The main station controller is based on the preset power supply priority. Send the regional load shedding command to each regional controller until the load bus voltage returns to normal value to ensure the power supply of the load area with high priority; 动态协调状态6：供电母线发生异常，主站多功能电源采取主电源模式，将系统内部的供电无缝切换到主站柴油发电机上；当检测到供电母线恢复正常，关闭柴油发电机，主站多功能电源采取主电源模式，将系统内部的供电无缝切换回供电母线上；各区域负荷处于正常工作状态；Dynamic coordination state 6: The power supply bus is abnormal, and the multi-function power supply of the main station adopts the main power supply mode to seamlessly switch the power supply inside the system to the main station diesel generator; when it is detected that the power supply bus is back to normal, the diesel generator is turned off, and the main station The multi-function power supply adopts the main power supply mode to seamlessly switch the power supply inside the system back to the power supply bus; the loads in each area are in normal working condition; 动态协调状态7：供电母线发生异常，主站多功能电源的主电源模式未被使能、且区域多功能电源以备用电模式被使能，各个区域控制器断开区域开关，区域多功能电源进入备用电模式，为所在区域内的负荷供电；当检测到供电母线恢复正常，区域多功能电源将区域内部的供电无缝切换回供电线路母线上；区域多功能电源的备用电模式未被使能，区域多功能电源为所在区域内负荷供电中断。Dynamic coordination state 7: The power supply bus is abnormal, the main power mode of the master station multi-function power supply is not enabled, and the regional multi-function power supply is enabled in the standby mode, each regional controller turns off the regional switch, and the regional multi-function power supply is turned off. The power supply enters the standby power mode to supply power to the loads in the area; when it is detected that the power supply bus is back to normal, the regional multi-function power supply seamlessly switches the power supply inside the area back to the power supply line bus; the standby power mode of the regional multi-function power supply If it is not enabled, the regional multi-function power supply interrupts the power supply for the loads in the region. 10.根据权利要求6所述的基于放射式接线的智能化高可靠性低压供配电方法，其特征在于，在步骤(4)中：10. The intelligent high-reliability low-voltage power supply and distribution method based on radial wiring according to claim 6, characterized in that, in step (4): 主站设备故障状态：主站设备发生故障、且区域多功能电源的备用电模式被使能，各个区域控制器断开区域开关，区域多功能电源进入备用电模式，为所在区域内的负荷供电，直至区域多功能电源存储的能量耗尽；区域多功能电源的备用电模式未被使能，所在区域内负荷供电中断；Master station equipment failure state: the master station equipment fails, and the backup power mode of the regional multi-function power supply is enabled, each regional controller turns off the regional switch, and the regional multi-functional power supply enters the backup power mode, which is the Supply power to the load until the energy stored in the regional multi-functional power supply is exhausted; the backup power mode of the regional multi-functional power supply is not enabled, and the load power supply in the area is interrupted; 系统停机状态：手动在人机界面上对主站控制器进行“停机”操作，主站控制器向各区域控制器发送停机指令，系统进入停机状态。System shutdown state: Manually "stop" the master station controller on the man-machine interface, the master station controller sends a shutdown command to each regional controller, and the system enters the shutdown state.
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